Mercurial > hg > orthanc-stone
diff Framework/Scene2D/Internals/CairoPolylineRenderer.cpp @ 595:6e471e6cf09b
CairoPolylineRenderer, SdlOpenGLWindow
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 26 Apr 2019 15:11:11 +0200 |
parents | |
children | 61ba4b504e9a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Scene2D/Internals/CairoPolylineRenderer.cpp Fri Apr 26 15:11:11 2019 +0200 @@ -0,0 +1,70 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2019 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "CairoPolylineRenderer.h" + +#include "../PolylineSceneLayer.h" + +namespace OrthancStone +{ + namespace Internals + { + void CairoPolylineRenderer::Render(const AffineTransform2D& transform) + { + const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>(); + + cairo_t* cr = GetCairoContext(); + + cairo_set_source_rgb(cr, layer.GetRedAsFloat(), layer.GetGreenAsFloat(), layer.GetBlueAsFloat()); + cairo_set_line_width(cr, layer.GetThickness()); + + for (size_t i = 0; i < layer.GetChainsCount(); i++) + { + const PolylineSceneLayer::Chain& chain = layer.GetChain(i); + + if (!chain.empty()) + { + for (size_t j = 0; j < chain.size(); j++) + { + ScenePoint2D p = chain[j].Apply(transform); + + if (j == 0) + { + cairo_move_to(cr, p.GetX(), p.GetY()); + } + else + { + cairo_line_to(cr, p.GetX(), p.GetY()); + } + } + + if (layer.IsClosedChain(i)) + { + ScenePoint2D p = chain[0].Apply(transform); + cairo_line_to(cr, p.GetX(), p.GetY()); + } + } + } + + cairo_stroke(cr); + } + } +}